What effort is it to start to make a reliable, house patrolling, beer fetching robot?

[Michael Wimble]

Well, if the beer isn’t in a refrigerator, it’s on order of this, about 72K lines:

Repository	C++	Python	Other	Total
can_do_challenge	7,933	1,074	557	9,564
Sigyn	0	6,260	202	6,462
sigyn_behavior_trees	933	57	389	1,379
sigyn_bluetooth_joystick	483	33	119	635
sigyn_description	0	268	2,429	2,697
sigyn_house_patroller	6,317	1,112	1,010	8,439
sigyn_interfaces	0	0	259	259
sigyn_notifier	0	635	26	661
sigyn_oakd_detection	0	1,462	126	1,588
sigyn_perimeter_roamer	1,932	860	477	3,269
wr_interfaces	0	43	120	163
wr_ldlidar	805	84	64	953
wr_proto_msgs	9,570	0	88	9,658
wr_ros_teensy	8,449	134	228	8,811
wr_teensy_boards	14,876	987	344	16,207
wr_teleop_twist_keyboard	0	590	25	615
wr_twist_multiplexer	417	25	89	531
TOTAL	51,715	13,624	6,552	71,891

[Dave Everett]

Or if you don’t use ROS, about 200 lines on an arduino and the same in Visual Basic.

Dave

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[Sergei Grichine]

Dave,

Of course one can build a robot, fetching a beer from the fridge in 200 lines of code.

But fetching a beer isn't the real goal.

Best Regards, 
-- Sergei
   

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[Michael Wimble]

<snicker>

> On Mar 28, 2026, at 9:02 PM, Sergei Grichine <vital...@gmail.com> wrote:
>
> Dave,
>
> Of course one can build a robot, fetching a beer from the fridge in 200 lines of code.
>
> But fetching a beer isn't the real goal.
>
>

> <17747567189472834104457856029118.jpg>
>
>
> Best Regards,
> -- Sergei
>

[Karim Virani]

Lol, ring of truth... but ...

On Sat, Mar 28, 2026, 9:29 PM Dave Everett <daveev...@gmail.com> wrote:

To view this discussion visit https://groups.google.com/d/msgid/hbrobotics/CAG61pbfG8%2B7L%3D%3DJTU40ON6b%2B_kG%3DQqAByRn%2BWRQD2B%3DvquFtiw%40mail.gmail.com.

[Thomas Messerschmidt]

If the robot IS the refrigerator, it becomes a whole lot easier. 

Thomas Messerschmidt

-  

Need something prototyped, built or coded? I’ve been building prototypes for companies for 15 years. I am now incorporating generative AI into products.

Contact me directly or through LinkedIn:   

https://www.linkedin.com/in/ai-robotics/

On Mar 28, 2026, at 7:29 PM, Dave Everett <daveev...@gmail.com> wrote:



To view this discussion visit https://groups.google.com/d/msgid/hbrobotics/CAG61pbfG8%2B7L%3D%3DJTU40ON6b%2B_kG%3DQqAByRn%2BWRQD2B%3DvquFtiw%40mail.gmail.com.

[Dave Everett]

If that's all you want get a drink vending machine. It won't be a robot though. It can't load itself.

Dave

To view this discussion visit https://groups.google.com/d/msgid/hbrobotics/377554AF-301E-4288-8EC3-81C5A00E7F34%40gmail.com.

[Thomas Messerschmidt]

I meant a roving robot fridge that stops when it sees a person and if asked, dispenses a can of beer/coke. 

To view this discussion visit https://groups.google.com/d/msgid/hbrobotics/CAG61pbe5vJc5sp9fdi_YkNCUM83nZfK63P%3DWS4WkAU7bjqgf7g%40mail.gmail.com.

[Thomas Messerschmidt]

Something like this: 

On Sun, Mar 29, 2026 at 12:51 AM Dave Everett <daveev...@gmail.com> wrote:

To view this discussion visit https://groups.google.com/d/msgid/hbrobotics/CAG61pbe5vJc5sp9fdi_YkNCUM83nZfK63P%3DWS4WkAU7bjqgf7g%40mail.gmail.com.

[Dave Everett]

There was an article I think in Servo magazine about some uni students who did this. They had a small 12v fridge on wheels that they could call.

Dave

To view this discussion visit https://groups.google.com/d/msgid/hbrobotics/CADyjTyYu-JX2gD0o%3Dc0BxKh_WeNbTRkGjRATANvfxAzUbYOADg%40mail.gmail.com.

[Thomas Messerschmidt]

or for the home: 

To view this discussion visit https://groups.google.com/d/msgid/hbrobotics/CAG61pbcpN1EFTGh7ioZePcSCeKb4bYiYK5iWZ9_26RFqN2oxgA%40mail.gmail.com.

[e...@okerson.com]

Or this:

https://www.serverobotics.com/

It will pick up your food at the restaurant, beer from 7-11, and deliver
to your front door.

Ed Okerson

On 2026-03-29 03:24, Thomas Messerschmidt wrote:
> Something like this:

>
> On Sun, Mar 29, 2026 at 12:51 AM Dave Everett
> <daveev...@gmail.com> wrote:
>
>> If that's all you want get a drink vending machine. It won't be a
>> robot though. It can't load itself.
>>
>> Dave
>>
>> On Sun, 29 Mar 2026 at 18:20, Thomas Messerschmidt
>> <thomas...@gmail.com> wrote:
>>
>> If the robot IS the refrigerator, it becomes a whole lot easier.
>>
>> Thomas Messerschmidt
>>
>> -
>>
>> Need something prototyped, built or coded? I’ve been building
>> prototypes for companies for 15 years. I am now incorporating
>> generative AI into products.
>>
>> Contact me directly or through LinkedIn:
>>
>> https://www.linkedin.com/in/ai-robotics/
>>
>> On Mar 28, 2026, at 7:29 PM, Dave Everett
>> <daveev...@gmail.com> wrote:
>>
>> 
>> Or if you don’t use ROS, about 200 lines on an arduino and the
>> same in Visual Basic.
>>
>> Dave
>>
>> On Sat, 21 Mar 2026 at 17:36, Michael Wimble <mwi...@gmail.com>
>> wrote:
>>
>> Well, if the beer isn’t in a refrigerator, it’s on order of
>> this, about 72K lines:
>>

>> REPOSITORY
>> C++
>> PYTHON
>> OTHER
>> TOTAL

>> [1].

>>
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>> send an email to hbrobotics+...@googlegroups.com.
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>>

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>> [2].

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> https://groups.google.com/d/msgid/hbrobotics/377554AF-301E-4288-8EC3-81C5A00E7F34%40gmail.com
>> [3].

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> [5].
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